Add support for python pageset

tools/perf/page_sets/top_10.py

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from telemetry.page.actions.javascript import JavascriptAction
+from telemetry.page.actions.navigate import NavigateAction
+from telemetry.page.actions.scroll import ScrollAction
+from telemetry.page.actions.wait import WaitAction
+from telemetry.page.python_page_set import PythonPageSet
+from telemetry.page.page import Page
+
+class ScrollPage(Page):
+  def __init__(self, url='', navigate_steps=None, credentials=''):
+    super(ScrollPage, self).__init__(url, '')
+    if not navigate_steps:
+      self._navigate_steps = []
+    else:
+      self._navigate_steps = navigate_steps
+
+  @property
+  def navigate_steps():
+    return self._navigate_steps
+
+  @property
+  def smoothness():
+    return [ScrollAction()]
+
+class Top10(PythonPageSet):
+  def __init__(self):
+    super(Top10, self).__init__(
+      description='10 Pages chosen from Alexa top sites',
+      archive_data_file='data/top_10.json',
+      credentials_path='data/credentials.json',
+      user_agent_type='desktop')
+
+    self.AddPages(
+      #top google property; a google tab is often open

[nduca, 2014/02/27 18:26:57]

from our chat

class Top10(PageSet):
  def __init__(self):
    class SimplePage(page.Page):
      def smoothness(self, actions):
         actions.scroll(....)

    self.AddPage(SimplePage("http://techcrunch.com"))
    self.AddPage(SimplePage("http://plus.google.com", credeitals="google"))

    class Gmail(page.Page):
      def __init__(self):
         super(Gmail, self).__init__('http://gmail', credeitals='google')

      def navigate(self, actions):
        super(Gmail, self).navigate(actions)
        actions.wait.WaitUntilTrue(
                 expression='''window.gmonkey !== undefined &&
 48 document.getElementById('gb') !== null''')
  
      def scroll(self, actions)
        actions.scroll(....)        
    self.AddPage(Gmail())

[nednguyen, 2014/02/27 19:49:33]

Done.

+      ScrollPage(url='https://www.google.com/#hl=en&q=barack+obama',
+                 navigate_steps=[
+                   NavigateAction(),
+                   WaitAction().UntilTextElementAvailable(text='Next')]),
+      #productivity, top google properties
+      ScrollPage(url='https://mail.google.com/mail/',
+                 navigate_steps=[
+                   NavigateAction(),
+                   WaitAction.UntilTrue(
+                     expression='''window.gmonkey !== undefined &&
+document.getElementById('gb') !== null''')]),
+      #productivity, top google properties
+      ScrollPage(url='https://google.com/calendar/',
+                 navigate_steps=[
+                   NavigateAction(),
+                   JavascriptAction().OfExpression(
+                     '''(function() { var elem = document.createElement("meta");
+                        elem.name="viewport";
+                        elem.content="initial-scale=1";
+                        document.body.appendChild(elem); })();'''),
+                   WaitAction().ForSeconds(2),
+                   WaitAction().UntilSelectorElementAvailable(
+                     selector='div[class~="navForward"]')],
+                 credentials='google'))